GCSE Biology- Heart as a double circulatory systemWatch
If you got a 3 marker that asked to explain why the heart is described as a double circulatory system what would the three points be?
Many thanks for any comments (;
-blood passes through the heart on a complete circuit of the body
-this allows a high pressure to be maintained in the body
-this is useful because we can meet the demand of the cells in the human body to carry out activities also allowing the body to become active.
this is what i believe is the answer although i would reccommend asking a teacher or checking a mark scheme
Good Luck On Your Exams!!